Ignore md separators.

test/out.txt

@@ -17,3 +17,7 @@ this is a normalized data table diagram.
   │ 1│     bob│ 19│
   │ 2│ charlie│ 23│
   └──┴────────┴───┘
+
+---
+
+Fin.

test/run

@@ -0,0 +1,7 @@
+#!/usr/bin/bash
+set -e
+cd "$(dirname "$(realpath "$0")")"
+cp source.txt out.txt
+
+cd ..
+cargo run -- test/out.txt

test/source.txt

@@ -9,13 +9,15 @@ this is a normalized data table diagram.
 | 1|b@o.b|      1|
 | 2|c@r.l|      2|
 +--+-----+-------+
-+---------------+
-|USERS          |
-+--+--------+---+
-|id|    name|age|
-+--+--------+---+
-| 1|     bob| 19|
-| 2| charlie| 23|
-+--+--------+---+
+  +---------------+
+  |USERS          |
+  +--+--------+---+
+  |id|    name|age|
+  +--+--------+---+
+  | 1|     bob| 19|
+  | 2| charlie| 23|
+  +--+--------+---+
 
+---
 
+Fin.